/* net_init.c: Initialization for network devices. */ /* Written 1993,1994,1995 by Donald Becker. The author may be reached as becker@scyld.com, or C/O Scyld Computing Corporation 410 Severn Ave., Suite 210 Annapolis MD 21403 This file contains the initialization for the "pl14+" style ethernet drivers. It should eventually replace most of drivers/net/Space.c. It's primary advantage is that it's able to allocate low-memory buffers. A secondary advantage is that the dangerous NE*000 netcards can reserve their I/O port region before the SCSI probes start. Modifications/additions by Bjorn Ekwall : ethdev_index[MAX_ETH_CARDS] register_netdev() / unregister_netdev() Modifications by Wolfgang Walter Use dev_close cleanly so we always shut things down tidily. Changed 29/10/95, Alan Cox to pass sockaddr's around for mac addresses. 14/06/96 - Paul Gortmaker: Add generic eth_change_mtu() function. 24/09/96 - Paul Norton: Add token-ring variants of the netdev functions. 08/11/99 - Alan Cox: Got fed up of the mess in this file and cleaned it up. We now share common code and have regularised name allocation setups. Abolished the 16 card limits. 03/19/2000 - jgarzik and Urban Widmark: init_etherdev 32-byte align 03/21/2001 - jgarzik: alloc_etherdev and friends */ #include #include #include //#include #include #include //#include #include #include #include #include #include //#include //#include //#include //#include //#include //#include //#include //#include #define rtnl_lock() ((void)0) #define rtnl_unlock() ((void)0) /* The network devices currently exist only in the socket namespace, so these entries are unused. The only ones that make sense are open start the ethercard close stop the ethercard ioctl To get statistics, perhaps set the interface port (AUI, BNC, etc.) One can also imagine getting raw packets using read & write but this is probably better handled by a raw packet socket. Given that almost all of these functions are handled in the current socket-based scheme, putting ethercard devices in /dev/ seems pointless. [Removed all support for /dev network devices. When someone adds streams then by magic we get them, but otherwise they are un-needed and a space waste] */ static struct net_device *alloc_netdev(int sizeof_priv, const char *mask, void (*setup)(struct net_device *)) { struct net_device *dev; int alloc_size; /* ensure 32-byte alignment of the private area */ alloc_size = sizeof (*dev) + sizeof_priv + 31; dev = (struct net_device *) kmalloc (alloc_size, GFP_KERNEL); if (dev == NULL) { printk(KERN_ERR "alloc_dev: Unable to allocate device memory.\n"); return NULL; } memset(dev, 0, alloc_size); if (sizeof_priv) dev->priv = (void *) (((long)(dev + 1) + 31) & ~31); setup(dev); strcpy(dev->name, mask); return dev; } static struct net_device *init_alloc_dev(int sizeof_priv) { struct net_device *dev; int alloc_size; /* ensure 32-byte alignment of the private area */ alloc_size = sizeof (*dev) + s

module \$_DLATCH_N_ (E, D, Q);
  wire [1023:0] _TECHMAP_DO_ = "simplemap; opt";
  input E, D;
  output Q = !E ? D : Q;
endmodule

module \$_DLATCH_P_ (E, D, Q);
  wire [1023:0] _TECHMAP_DO_ = "simplemap; opt";
  input E, D;
  output Q = E ? D : Q;
endmodule

/* CONFIG_HIPPI */ void ether_setup(struct net_device *dev) { /* Fill in the fields of the device structure with ethernet-generic values. This should be in a common file instead of per-driver. */ dev->change_mtu = eth_change_mtu; dev->hard_header = eth_header; dev->rebuild_header = eth_rebuild_header; dev->set_mac_address = eth_mac_addr; dev->hard_header_cache = eth_header_cache; dev->header_cache_update= eth_header_cache_update; dev->hard_header_parse = eth_header_parse; dev->type = 0; //ARPHRD_ETHER; dev->hard_header_len = ETH_HLEN; dev->mtu = 1500; /* eth_mtu */ dev->addr_len = ETH_ALEN; memset(dev->broadcast,0xFF, ETH_ALEN); /* New-style flags. */ dev->flags = IFF_BROADCAST|IFF_MULTICAST; } EXPORT_SYMBOL(ether_setup); #ifdef CONFIG_FDDI void fddi_setup(struct net_device *dev) { /* * Fill in the fields of the device structure with FDDI-generic values. * This should be in a common file instead of per-driver. */ dev->change_mtu = fddi_change_mtu; dev->hard_header = fddi_header; dev->rebuild_header = fddi_rebuild_header; dev->type = ARPHRD_FDDI; dev->hard_header_len = FDDI_K_SNAP_HLEN+3; /* Assume 802.2 SNAP hdr len + 3 pad bytes */ dev->mtu = FDDI_K_SNAP_DLEN; /* Assume max payload of 802.2 SNAP frame */ dev->addr_len = FDDI_K_ALEN; memset(dev->broadcast, 0xFF, FDDI_K_ALEN); /* New-style flags */ dev->flags = IFF_BROADCAST | IFF_MULTICAST; } EXPORT_SYMBOL(fddi_setup); #endif /* CONFIG_FDDI */ #ifdef CONFIG_HIPPI void hippi_setup(struct net_device *dev) { dev->set_multicast_list = NULL; dev->change_mtu = hippi_change_mtu; dev->hard_header = hippi_header; dev->rebuild_header = hippi_rebuild_header; dev->set_mac_address = hippi_mac_addr; dev->hard_header_parse = NULL; dev->hard_header_cache = NULL; dev->header_cache_update = NULL; dev->neigh_setup = hippi_neigh_setup_dev; /* * We don't support HIPPI `ARP' for the time being, and probably * never will unless someone else implements it. However we * still need a fake ARPHRD to make ifconfig and friends play ball. */ dev->type = ARPHRD_HIPPI; dev->hard_header_len = HIPPI_HLEN; dev->mtu = 65280; dev->addr_len = HIPPI_ALEN; memset(dev->broadcast, 0xFF, HIPPI_ALEN); /* * HIPPI doesn't support broadcast+multicast and we only use * static ARP tables. ARP is disabled by hippi_neigh_setup_dev. */ dev->flags = 0; } EXPORT_SYMBOL(hippi_setup); #endif /* CONFIG_HIPPI */ #if defined(CONFIG_ATALK) || defined(CONFIG_ATALK_MODULE) static int ltalk_change_mtu(struct net_device *dev, int mtu) { return -EINVAL; } static int ltalk_mac_addr(struct net_device *dev, void *addr) { return -EINVAL; } void ltalk_setup(struct net_device *dev) { /* Fill in the fields of the device structure with localtalk-generic values. */ dev->change_mtu = ltalk_change_mtu; dev->hard_header = NULL; dev->rebuild_header = NULL; dev->set_mac_address = ltalk_mac_addr; dev->hard_header_cache = NULL; dev->header_cache_update= NULL; dev->type = ARPHRD_LOCALTLK; dev->hard_header_len = LTALK_HLEN; dev->mtu = LTALK_MTU; dev->addr_len = LTALK_ALEN; dev->broadcast[0] = 0xFF; dev->flags = IFF_BROADCAST|IFF_MULTICAST|IFF_NOARP; } EXPORT_SYMBOL(ltalk_setup); #endif /* CONFIG_ATALK || CONFIG_ATALK_MODULE */ int register_netdev(struct net_device *dev) { int err; rtnl_lock(); /* * If the name is a format string the caller wants us to * do a name allocation */ if (strchr(dev->name, '%')) { err = dev_alloc_name(dev, dev->name); if (err < 0) goto out; } /* * Back compatibility hook. Kill this one in 2.5 */ if (dev->name[0]==0 || dev->name[0]==' ') { err = dev_alloc_name(dev, "eth%d"); if (err < 0) goto out; } err = register_netdevice(dev); out: rtnl_unlock(); return err; } void unregister_netdev(struct net_device *dev) { rtnl_lock(); unregister_netdevice(dev); rtnl_unlock(); } EXPORT_SYMBOL(register_netdev); EXPORT_SYMBOL(unregister_netdev); void alert_slow_netdevice(struct net_device *dev, char *nictype) { printk("***************************\n"); printk("* WARNING FOR NET DEVICE %s (NIC type '%s'):\n", dev->name, nictype); printk("* This NIC cannot support fully efficient networking in Xen.\n"); printk("* In particular, extra packet copies will be incurred!\n"); printk("* See documentation for a list of recommended NIC types\n"); printk("***************************\n"); } #ifdef CONFIG_TR void tr_setup(struct net_device *dev) { /* * Configure and register */ dev->hard_header = tr_header; dev->rebuild_header = tr_rebuild_header; dev->type = ARPHRD_IEEE802_TR; dev->hard_header_len = TR_HLEN; dev->mtu = 2000; dev->addr_len = TR_ALEN; memset(dev->broadcast,0xFF, TR_ALEN); /* New-style flags. */ dev->flags = IFF_BROADCAST | IFF_MULTICAST ; } /** * init_trdev - Register token ring device * @dev: A token ring device structure to be filled in, or %NULL if a new * struct should be allocated. * @sizeof_priv: Size of additional driver-private structure to be allocated * for this ethernet device * * Fill in the fields of the device structure with token ring-generic values. * * If no device structure is passed, a new one is constructed, complete with * a private data area of size @sizeof_priv. A 32-byte (not bit) * alignment is enforced for this private data area. * * If an empty string area is passed as dev->name, or a new structure is made, * a new name string is constructed. */ struct net_device *init_trdev(struct net_device *dev, int sizeof_priv) { return init_netdev(dev, sizeof_priv, "tr%d", tr_setup); } /** * alloc_trdev - Register token ring device * @sizeof_priv: Size of additional driver-private structure to be allocated * for this token ring device * * Fill in the fields of the device structure with token ring-generic values. * * Constructs a new net device, complete with a private data area of * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for * this private data area. */ struct net_device *alloc_trdev(int sizeof_priv) { return alloc_netdev(sizeof_priv, "tr%d", tr_setup); } int register_trdev(struct net_device *dev) { return __register_netdev(dev); } void unregister_trdev(struct net_device *dev) { unregister_netdev(dev); } EXPORT_SYMBOL(tr_setup); EXPORT_SYMBOL(init_trdev); EXPORT_SYMBOL(alloc_trdev); EXPORT_SYMBOL(register_trdev); EXPORT_SYMBOL(unregister_trdev); #endif /* CONFIG_TR */ #ifdef CONFIG_NET_FC void fc_setup(struct net_device *dev) { dev->hard_header = fc_header; dev->rebuild_header = fc_rebuild_header; dev->type = ARPHRD_IEEE802; dev->hard_header_len = FC_HLEN; dev->mtu = 2024; dev->addr_len = FC_ALEN; memset(dev->broadcast,0xFF, FC_ALEN); /* New-style flags. */ dev->flags = IFF_BROADCAST; } /** * init_fcdev - Register fibre channel device * @dev: A fibre channel device structure to be filled in, or %NULL if a new * struct should be allocated. * @sizeof_priv: Size of additional driver-private structure to be allocated * for this ethernet device * * Fill in the fields of the device structure with fibre channel-generic values. * * If no device structure is passed, a new one is constructed, complete with * a private data area of size @sizeof_priv. A 32-byte (not bit) * alignment is enforced for this private data area. * * If an empty string area is passed as dev->name, or a new structure is made, * a new name string is constructed. */ struct net_device *init_fcdev(struct net_device *dev, int sizeof_priv) { return init_netdev(dev, sizeof_priv, "fc%d", fc_setup); } /** * alloc_fcdev - Register fibre channel device * @sizeof_priv: Size of additional driver-private structure to be allocated * for this fibre channel device * * Fill in the fields of the device structure with fibre channel-generic values. * * Constructs a new net device, complete with a private data area of * size @sizeof_priv. A 32-byte (not bit) alignment is enforced for * this private data area. */ struct net_device *alloc_fcdev(int sizeof_priv) { return alloc_netdev(sizeof_priv, "fc%d", fc_setup); } int register_fcdev(struct net_device *dev) { return __register_netdev(dev); } void unregister_fcdev(struct net_device *dev) { unregister_netdev(dev); } EXPORT_SYMBOL(fc_setup); EXPORT_SYMBOL(init_fcdev); EXPORT_SYMBOL(alloc_fcdev); EXPORT_SYMBOL(register_fcdev); EXPORT_SYMBOL(unregister_fcdev); #endif /* CONFIG_NET_FC */